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Finding the Fourth Proportional to 13,778.63, 19,014.41 and 7,491.05

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Solution

The fourth proportional to 13,778.63, 19,014.41 and 7,491.05 is: 10,337.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.63 : 19,014.41 = 7,491.05 : x
  2. Step 2: Convert to fraction form
    13,778.63/19,014.41 = 7,491.05/x
  3. Step 3: Cross multiply
    13,778.63x = 19,014.41 × 7,491.05
  4. Step 4: Simplify right side
    13,778.63x = 142,437,858.58
  5. Step 5: Solve for x
    x = 142,437,858.58/13,778.63
  6. Step 6: Final answer
    x = 10,337.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.